[dba-SQLServer] SQL Server security

I see logs of references to people probing ports looking for SQL Server ports (and mysql as well I 
assume).

If I come in through a Hamachi VPN then I do not directly expose the port to the outside world 
correct?  IOW the hacker would need to belong to my VPN network in order to directly get to the open 
port?

-- 
John W. Colby
www.ColbyConsulting.com